Radio Amateur 10-1981

Bilal Isotron Antennas

Bilal Isotron

Isotron antennas, designed and manufactured by the Bilal Company, employ a unique new embodiment of a full-size harmonic antenna which permits the radio amateur who has limited space to get on the air from an apartment, condominium, mobile home, or other space-limited environments, There are no compromises in matching or tuning Isotron antennas to your transmitter. This unique design allows direct feed with standard coaxial cable and does away with the need for radiais. How is it that an...

For Radio Amateurss

BK7311 SOME OF THE BEST FHO l KILOSAUO 10.W Bfc 311 SOMEOF THE 6K7351 SSB THE MISUNDERSTOOD MODE SRIOfli STUDY GUIDE ADV. CLASS S SG10HCI STUDY GUIDE EXTRA CLASS 5.95 SG7357 STUDY GUIDE-NOVICE CLASS i 4.95 BK1190 THE TEN METEfl FM HANDBOOK i 4.95 LB7355 TEST EQUIP Ltfi V1 -COMPONENT LB 36C f EST EQUIP LI& V2-AUDIO TEETERS LB7361 TEST EQUIP LIB V3-RADIQ EOUIP t LB73G2 TEST EQUIP LIB -IGTEST EQ 1 BK734& TOOLS .TECHNIQUES 4.95 MIC ROC0M PUT

Daiwa Cnw 418 Qualit

Daiwa Cnw 418

Output power l it 4 b Dt Distortion I tfra S N ratio. thar 50dB Low CutFillers 40CHi l 10. High Cut Filters 1100Hz, 1600Hz. 2500Hz Premium quality, high-gain design Special lilt-over feature tor added convenience Leading the way in convenience is the Daiwa CNA-2002 2.5 kW PEP Automatic Anienna Tuner Cross-Needl Metering and optimum matching in under seconds rsiake it the perfect compliment to an . state-oMhe-art amateur station Frequency range 3,5-30 Hz in. td'ng ,-VAHC I ir r Tuning...

Getting the most out of state QSO

How would you like to be a sought-after station on the low bands Nov* would you handle a pileup when you, a stateside station in W2- or W land, call CQf Often the situation is reversed A rare DX station has probabK worked Thousands of US stations in all 50 states, so why should he work another W2, W4 or W6 But once or twice a two way commu- mu tur 'Jtaiiio Stations in g the Stale of One of many certificates available for participating in state QSO parties, year, it can be your turn to be the...

Memory Keyer

Reports say a sneak preview of the new Heathkit* SA-5010 iMat c Memory Keyer created much interest at the 1981 Dayton Hamvention. The keyer is now featured in the latest Heathkit Catalog from Heath Company. Described by a Heath spokesman as compact and modern in styling, the SA-5010 uses a custom microprocessor to provide up to 10 buffers for storing up to 240 characters of text or commands. These variable-length buffers eliminate wasted memory space by letting the user store text in several...

Hybrid Components Data Book

A new data book detailing the specifications of discrete semiconductor components has been published by Motorola. The new Discrete Hybrid Components Data Book covers 10 different discreet-product categories, including a variety of transistor, diode, thyristor, and optoelectronic tines, and includes five different packaging methods standard chips dice , flip-chips, Micro-T , SOT-23, and SOT-89, The book includes an easy-to-use cross-reference between standard discrete packaged devices and...

Optional Accessories

One amp pos 3.00 Set Can be toidtw to PC B lt f to Access RoliryS wtch i Two 5 posibon .I Gr amp at For rtmolt wiring to PC Bo 10 access iun For operation on 117VAC house voltage The ZULU 3TZ is a full blown ROM and MICROPROCESSOR unlike other standard clock IC's, it allows exceptional flexibility, Almost a year in design, it is the most advanced station clock on the market. 1 Super Music Maker with case and two 5-oosition rotarv switches 32.00 2. Super Music with one...

Zhzz Or Any Common Npn Switch

For many years t have used my ohmmeter to test diodes The usual technique was to set the meter on R x 10, fumble with the test leads to get a low reading OK in the forward direction , reset the meter to R x 100 or R X 1000, re-fumble to reverse the diode, and check for a high reading OK in the reverse direction . Usually, around the second fumble I would lose track as to whether t actually reversed the diode and would have to fumble a few more times to recheck. Recently, I purchased a bag of...

In Profile Ted Gamlin A Contester

1981 Amateur Pics

In a darkened farmhouse on the crest of a windswept New fcngland hill, conventional time has stopped for 1 i men For them, the hours of the day hold ho importance, other than that of marking the approach ot sunrise and sun set and the attendant shifts in propagation. This weekend, time is a 48-hour continuum for these men within which they must contact as many DX countries as possible, amass as many QSOs as possible, and do so on as many HF bands as possible. They measure time in the hours of...

S At Af For Dab Le Pric

Where else can you get a value-packed radio at such FM-5 PC Board Kit - ONLY 1 59.95 complete with controls, heatsinkr etc Cabinet Hit microphone, crystals, etc. available separately SAVE A BUNDLE ON VHF FM TRANSCEIVERS 10 watts, 5 Channels, for6M, 2M,or220 FM MODULES FOR REPEATERS, LINKS, TELEMETRY, ETC. VHF Kits from 27 to 300 MHz. UHF Kits from 300 to 650 MHz. Broadband Kits 20-650 MHz. Prices start at S14.95 VHF and 18_95 UHF ' All preamps and converters have noise f lt gufe 2dB or less T51...

The GU Ac Generator

100 pounds of portable power from Heath A major problem in any emergency planning or Field Day preparation always seems to be finding a generator. Most commercially-available gas generators are either too large or too expensive to be practical for most hams to own. Finding a generator to borrow or rent isn't always easy, either Now Heath-kit M has helped to solve this problem with the mtro-duction of the Heath-Watt portable generator. The Heath-Watt uses a five-horsepower four-cycle engine to...

Digital Multimeter

low cost plus high performance equals success Although the name VIZ may seem to many readers a rather recent addition to the list of manu-facturersof test equipment, it is not. For many years, this company maintained a low profile as a test equipment contractor for RCA Now on their own, VIZ has announced a complete lime ot low-cost, technician-ore ented test instruments. The new WD-747 digital multimeter is an example An innovative feature is the inclusion of a transistor hie Beta tester The...

Readout Inveterate Battery

Thurher, r W8FX S 7 Poplar Drive Miitbrook AL 36054 The General Electric Programmable Clock Radio What, you say, a mere clock radio reviewed in the pages of one of America's foremost communications magazines Yes, since GE's intriguing, frequency-synthesized Model 7-4885, creatively dubbed the Great Awakening by the manufacturer, represents a very positive step in filling a communications receiver with a built-in clock function. As an avid hobbyist who's a softie for anything...

The Green Gallon

-an HW-101 look-alike except for those four 811 As This article describes a project which evolved into a 1-kW linear amplifier The unit has been several months in the making. The effort put forth in building this proiect is dedicated to the amateur who enjoys the satisfaction of creating, building, and operating his own professional equipment. The parts and subassemblies required to fabricate the amplifier were obtained from local hamfests orwere reluctantly surrendered from junk boxes by...

Special Report

The following is excerpted and being reprinted from the Spring, 1981, Southern California Repeater Remote Base Association Newsletter. I am bringing you this information for several reasons. First, like all other bands, the 420- through 450MHz spectrum Is facing its own form of crisis in many geographic areas, and herein you will find the details of how one group of dedicated radio amateurs plans to deal with the problems that tie ahead,. Second, outside of those who use the band in Southern...

Cvd Hmoo Ea

3 5 to 11 pF 3.5 to 13 pF 5 Lo 25 pF 5. 1 to 40 pF 3. 5 to 15 pF 5. 2 to 40 pF 2, 5 to 6 pF CERAMIC STAND OFFS 'CNP-5 3 8 x 5 fl 7 16 x 1 1 4 NHW0112 3 a 1 1 2 NL523W03-010 3 4 x 1 1 4 . 29 each . 39 each , 49 each . 79 oach CORES AND BEADS 443 Shield Bead Ftr nUL Rod 1, 4 X 7 1 2 rem - Beads 1, 8 lung Ferrm beads 3 8 long Ferrite Beads 1 16 long 4 1,00 3 1.00 10 1,00 U l, 00 6 i 00 4 1, 00 10, 1,00 2. 99 12 1 00 L00 ilj 1.00 DOOR KNOB CAPS 470 pF 15 KV Dual 500 pF n 15 KV 680 pF 6 KV 800 pF 15...

Your Own Autopatch For Simplex Operation

Shipping S3 50 in U S A N > 3 Residents Add ' Sales Ta* Cold Spring Creamery Road Doylestown PA 1390 1 build this audio function generator and sweep your troubles away ne of my favorite aspects of ham radio is audio circuitry, and I am constantly construe ting amplifiers, filters, and other devices which operate within the audio spectrum. In order to evaluate my proj ects, I built the swept function generator described here to use in conjunction with my oscilloscope. The generator features a...

Noisebridge Core

I am writing to point out a smalt error in your otherwise ex cellent article on the noise bridge ' QRM-Free Antenna Tuning, August. 196U The Indiana General core specified is made jn a number of different ferrite mixes ' and you must specify which one you want. The commonly used one is the Q1 mix. Also, Indiana General has changed their numbering system. so the CF-102 is now known as the F625-9, Thus, one should ash tor F625-9 in Q1 mix. If you order from Amidon, you should specify an FT-37...

Kantronics Field Day Manual

ader can add to the i radio by allowing many signals that pi ex or too fast to in on such things ws-wfre service transmissions weather information and financial reports that are sent oy radioteietype (Rrm, ASCII computer ianguage or Morse code. Some code readers only copy one or two types of signals, but the Kantronics Field Day 2 tm allows you to copy rtty at 60. 67 75 and 100 WPM ASCII at 110 ano 300 tif sent as it is typed) Baud ano Morse at 3 to 80 WPM. The Field Day 2 even has an editing...

Aes Branch Storesassociate Store

Ohio 44092 28940 Euclid Avenue Phone 216 585-7388 Ohio Wats 1-800-362-0290 Outside Ohio 1-800-321-3594 ORLANDO Florida 32803 621 Commonwealth Ave. Phone 305 894-3238 Fia. Wals 1-800-432-9424 Outside Fla. 1-800-327-1917 LAS VEGAS. Nevada 89106 1072 N. Rancho Orive Phone 702 647-3114 Pete, WA8PZA amp Squeak. AD7K Outside Nev. 1-800-634-6227 ERICKS0N COMMUNICATIONS CHICAGO, Illinois 60630 5456 N. Milwaukee Avenue Phone 312 631-5181 Outside ILL. 1-800-621-5802 fohn U Cartmhour fr N5DV 36...

Cubic transceiver for Every Need

The performance rig for base stations. Dual PTOV Passband tuning, 235 watt Input on all bands, and much, much morel day s performance and no-nonsense features leader. AH the features of the A5TRO-102BXA, plus WARC bands, RTTY mode, and morel Cubic mobile antennas for the most sophisticated user Modei M34 with up to 4 bands rated at 200 watts PEP. The M34 features good efficiency, and no coils to change. Model 45 features 5 bands with excellent efficiency, The Model 45, rated at...

Never Say

Right outside the back door of the room. Chuck and Tim quickly put up an antenna and were batting 'em out on 15 meters. was able to get in edgewise and operate, but most of the time the band was open to Europe instead of the US. I didn't find the piieups that I did when operating from Turks and Caicos islands, The next morning we had an appointment with the Prime Minister of the country. He wanted to thank me for sending Tim down last year with the four trunks of ham gear to help them after the...

Just For The Record

The FCC has added some new commissioners Henry Rivera, a New Mexico lawyer, and Mimi Dawson, a congressional aide. This compiements the full commission, consisting of Chairman Mark Fowler, James Qoello, Joseph Fogarty, Abbott Washburn, and Anne Jones. In a personnel change more directly affecting hams, we iearned at deadline that Carlos Roberts, chief of the private radio bureau, was planning to leave at the end of August. He was offered a job as director of land mobile development for M A Com...

Hooray For Hollywood Department

About a year and a half ago, my friend, Jim Davis KA6IUH, was the program director for Los Angeles radio station KM PC. Thanks to Jim, 1 had a chance to meet and become friends with a number of darn nice people involved in one way or another with the KMPC operation, Among them is a man named Gary Owens. For many years, Gary was the afternoon mainstay of KMPCr though I suspect he is best known to the rest of the nation as the announcer. with his hand always to his ear. on the old Rowan and Marlm...

Transformers

12. 99 each 2099459-00 28 V 1.5 Amps 9.6 V 9 Amps 16. 8 V 300 MA 8 1.00 6 1,00 6 1. 00 6 l lt 00 6 l. 00 NEW DUAL COLON LED .69 each or 10 5.00 Mrtorob WKW 2S2 VHF power amplifier-Frequency ni e 1 4-J4S MHr Output fxrvvr 25W K minium 19. 2 dB Mot rulj rf trjnsislurs Stl cliui Guide t CriKM-Ftl itfTirnci-C tnlof, TO-5 Ca wir, h i fttjit 1.6 Amp, 100 VPCh let 3mA Sosttire RCA puuriT trailfiiSlOrs NPN KCS 253, Vceo CO NFE IC 20 A Jllpr.i Vce 4V aso WhllH, Fl 2 MHz. RCA Truct Typ,- T412 LB 40799...

Rtty Accessories

FSD 1 - RTTY Demodulator I 70 .r 8 0 Hertz shift Super sharp filters Fits all Macrotronrcs Ham Interfaces except TERMINALL XTL-1 Crystal controlled RTTY AFSK board 170 850 CW shifts Fits ail Macrotromcs Ham Interfaces ex ept 1 EFMIN ALL MLK Loop lriTerf r o ph.m. j in ff. pLu i 'mrni for tfrl reed relay on ail Macrotromcs Ham Interfai amp amp except TERM ALL ode Vi sopfcist ated . ompul r i s t i iriarr i'--r Parallel Printer Interface Jrivt f nailel printer without ihe AI.KI 8bn Module scfr...

Boneconduction Hearing

Hamtronics Inc

Individuals with hearing impairments may soon be able to enjoy sound-oriented pastimes like ham radio by using a bone-conduction hearing aid developed by Matsushita Electric Co. bypasses the eardrum by vibrating the bones near the inner ear. A small microphone, amplifier, battery, and vibrating device are built into the frames of special eyeglasses. Matsushita plans to release this new hearing aid for the US market in the near future. tact Ruder and Finn, Inc., 110 East 59th Street, New York NY...

For Toll Free Ordering Call

Or.H Otfiqtf . ng tiimei. r ji2 Ci II il i 3-1 i rt i. tr in HOW TO DEFEND VOURSELF AGAINST RADAR BK1201 by Bruce F. Sogner and James R. Bodnar, a lawyer and radar expert. This book gives you the ammunition to challenge the radar evidence thai usually leads to a speeding conviction. The major part of the book details the inner workings of radar you'll become more of an expert thah most police officers and judges. The remainder of the book outlines how to defend yourseli agamst a...

The Certificate Hunters Club

Thanks to Scott Dougfas KB7SB, who is the Western States County Award Manager for CHC, we are able to bring to you an extravagant series of operating awards which will obviously win the approval of every county hunter in the world ,VP2G rJR-KA i,KA1 (Mina) i,KA1 (Ogasa) JD.7J1 (Ok no) JW JX KG4 (See CO) KH1,KB (Baker) KH2.KG6 (Guam) KH3,KJ KH5K.KP6 (King) KH5,KP6 (Palmy) KH6 WH6,AH6tNH6 KH6,KH7 (Kure) KH8,KS6 KH9,KW KH0TKH2,KG6(Man) KC6 (West) KC6 (East) KP (Desoth) KP1 (Navassa) KP2, KV...

Unique Microphone System

Mobile operating will never be the same Daiwa's RM-940 brings the total freedom of cordless operation with a lightweight, compact microphone, infrared sensor, and con-troNcharger unit. The elec ret condenser microphone can be hung around the neck like a pendant (cord supplied), or conveniently clipped to a shirt pocket. A latching pushbutton switch activates the tiny infrared transmitters on the microphone. Audio and transmit receive switching are then transferred via infrared beam to a sensor...

Photon Torpedo

I take exception to the theory put forth by W4FD and W4ATE (Juiy, 1981, p. 52) that photons of light constitute the medium through which radio waves propagate. The theory sounds somewhat plausible but has one major deficiency. Namely, if radio waves ' need some sort of medium to travel in (such as an ocean of light photons), then what sori ot medium exists for the propagation of light ,lwavestr Perhaps, the authors would suggest that since radio waves travel through light waves, then light...

Test Amy Scanner

Test any scanner purchased From Communication Electronics for 31 days before you decide to keep it. If for any reason you are no completely satisfied return it m Original contigo *> th aJI parts in 3 I days, for a prompt re u r J le ss 5 h ipp- ng h a nd i nr> g cha rges n n d le ct ftdi LSp List pnce S16S 95.C price S109 OO tow coif e-cfi mteJt bend scanner The Fanon Slimline6-mlU grves you si* channels ci crystal conlroliedexcitemenl Unique AutomaticPeal- Tuning C Cuii adjusts me receiver...

Folded Unipole for

Top-banders, take notice Here's a top-loaded radiator the government's seal of approval The more you consider and study antenna phenomena, the more you become fascinated with the flow of ideas about radiation devices and their possi-bitities Here is just one such interesting antenna type along with its development, which occurred step by step usmg a lot of published antenna information and much on-the-air discussion and revelation. This is an uncommon but very effective antenna type that could...